VOC treatment equipment based on zeolite molecular sieve

Abstract

The invention discloses VOC (volatile organic compound) treatment equipment based on a zeolite molecular sieve, and relates to the technical field of VOC treatment. The group of zeolite rotating wheels are alternately inserted into the shell; the driving assembly is mounted at the upper end of the shell and used for driving the zeolite rotating wheel in the shell to rotate; the desorption components are mounted on two sides of the shell and are used for desorbing the organic substances adsorbed by the group of zeolite rotating wheels; the locking assembly sleeves the shell and is used for locking and sealing the zeolite rotating wheel in the shell and the shell; the cleaning bin is connected to the front end of the shell; the drawing assembly is mounted at the front end of the cleaning bin and is used for driving a group of zeolite rotating wheels to alternately move; the cleaning assembly is installed in the cleaning bin and used for conducting high-temperature steam cleaning on the set of zeolite rotating wheels. The zeolite runner cleaning device has the beneficial effects that the zeolite runner in the cleaning bin is subjected to high-temperature steam cleaning, dust impurities in honeycomb ducts of the zeolite runner are removed, the purpose of cleaning without shutdown is achieved, and the production efficiency is effectively improved.

Description

A VOC treatment device based on zeolite molecular sieves Technical Field

[0001] This invention relates to the field of VOC treatment technology, specifically to a VOC treatment device based on zeolite molecular sieves. Background Technology

[0002] VOCs (volatile organic compounds) refer to organic compounds with a saturated vapor pressure >70.91 Pa and a boiling point <260℃ at room temperature, including benzene compounds, aldehydes, ketones, and halogenated hydrocarbons. They are key precursors to ozone and PM2.5, widely present in industries such as chemical, coating, printing, and pharmaceutical, and are characterized by flammability, toxicity, and irritating odors.

[0003] VOC (Volatile Organic Compound) emissions are generally treated through two main pathways: recovery and destruction. These pathways involve collecting, separating, converting, or purifying volatile organic compounds emitted during industrial production to reduce their harm to the atmospheric environment and human health. However, zeolite rotors may experience clogging after a period of use. Dust and other particles entering the honeycomb channels of the zeolite rotor, or certain waste gas components and high-boiling-point substances, can clog the zeolite channels, leading to a decrease in rotor processing efficiency. Clogging affects ventilation, reduces adsorption efficiency, increases VOC emission concentration, and also increases fan frequency and load, increasing energy consumption, shortening rotor life, and in severe cases, potentially causing equipment shutdown and rotor combustion. Summary of the Invention

[0004] To address the above deficiencies, this invention provides a VOC treatment device based on zeolite molecular sieves to solve the problem of zeolite rotor cleaning.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a VOC treatment device based on zeolite molecular sieve, comprising a shell; a set of zeolite rotors alternately inserted inside the shell; a drive assembly installed at the upper end of the shell and used to drive the zeolite rotors inside the shell to rotate; a desorption assembly installed on both sides of the shell and used to desorb the organic matter adsorbed by the set of zeolite rotors; a locking assembly fitted onto the shell and used to lock and seal the zeolite rotors inside the shell and the shell itself; a cleaning chamber connected to the front end of the shell; a pull-out assembly installed at the front end of the cleaning chamber and used to drive the set of zeolite rotors to move alternately; and a cleaning assembly installed inside the cleaning chamber and used to perform high-temperature steam cleaning on the set of zeolite rotors respectively.

[0006] Furthermore, the outer casing includes a front outer casing, a middle outer casing, and a rear outer casing, and the bottom of each is fixed to the base by corner brackets. The front outer casing has an air inlet at its front end and a pre-filter is installed inside. The rear outer casing has an exhaust outlet at its rear end. The air inlet is connected to an external VOC exhaust gas pipeline. The pre-filter uses an activated carbon filter layer to filter out particulate matter and impurities in the exhaust gas, preventing dust, oily droplets, and other impurities in the VOC exhaust gas from clogging the pores of the zeolite rotor and affecting its adsorption performance, thereby protecting the zeolite rotor and extending its service life. The clean gas filtered by the zeolite rotor is finally discharged through the exhaust outlet.

[0007] Furthermore, the drive assembly includes a set of starter motors, which are fixed to the upper sides of the housing; a set of pinions, which are mounted on the drive end of the set of starter motors and are retractable; a set of hollow truncated cones, with a set of zeolite wheels movably mounted on the corresponding hollow truncated cones; and a set of gear rings, which are fitted onto the outer surface of the set of zeolite wheels and mesh with the corresponding pinions. The rotational force generated by the starter motors is transmitted to the gear rings through the pinions, thereby driving the zeolite wheels on the hollow truncated cones to rotate. The pinions rotate before meshing to ensure precise engagement with the gear rings and avoid impact and damage.

[0008] Furthermore, the desorption assembly includes a set of desorption chambers, which are relatively sealed and installed on both sides of the upper end of the zeolite rotor inside the outer casing; a cold air pipe connected to the front end of the set of desorption chambers and used to cool the desorbed zeolite rotor; a heat exchanger connected to the rear end of the cold air pipe; a high-temperature desorption pipe connected to the rear end of the set of desorption chambers and used to perform high-temperature desorption of organic matter adsorbed by the zeolite rotor; and a set of linear actuators, which are relatively installed on both sides of the outer casing and used to drive the relative movement of the set of desorption chambers; a set of linear actuators... Unit 1 drives a set of desorption boxes to be sealed and fitted to both sides of the upper end of the zeolite rotor inside the shell. The adsorption zone on the zeolite rotor is used to filter organic matter in VOC waste gas. When the zeolite rotor carries the adsorbed organic matter to the desorption zone, the high temperature air in the high temperature desorption tube causes the zeolite to heat up and the bonding force to weaken. The organic matter is desorbed and sent to the subsequent oxidation furnace for incineration. After desorption, the high temperature zeolite is transferred to the cooling zone. The cold air pipe uses room temperature air to cool the zeolite rotor to room temperature, restore adsorption activity, and ensure stable adsorption efficiency in the next cycle.

[0009] Furthermore, the cold air pipe and the high-temperature desorption pipe are both made of corrugated pipes; this facilitates their movement with the desorption box.

[0010] Furthermore, the locking assembly drive device one is installed at the bottom of the housing; there is a set of rotating shafts connected by a coupling, and the right end is installed on the drive end of the drive device one; there are two sets of external threads, which are opposite to each other on the outer surface of the set of rotating shafts; there are two sets of sliding nuts, which are fitted on the two sets of external threads; there are two sets of locking rings, which are movably sealed and fitted on the set of housings, and the bottoms are respectively connected to the corresponding sliding nuts; the two sets of locking rings lock and seal the zeolite rotor and the sealing fixed wheel inside the housing respectively.

[0011] Furthermore, the pull-out assembly includes a set of fixed slide rails installed at the bottom of the outer casing, and a set of zeolite wheels slidably mounted on the corresponding fixed slide rails; a second set of linear actuators installed at the front end of the cleaning chamber and used to drive the set of zeolite wheels to move alternately; and a set of sealing fixed wheels connected to the rear end of the set of zeolite wheels to seal the outer casing; the assembly can pull the set of zeolite wheels and the sealing fixed wheels to move alternately, facilitating high-temperature steam cleaning of the zeolite wheels.

[0012] Furthermore, both ends of a set of zeolite rotors and a set of sealing fixed rotors are respectively provided with annular sealing grooves; this facilitates the locking ring to lock and seal the zeolite rotors and sealing fixed rotors.

[0013] Furthermore, the cleaning assembly includes a second set of drive devices, installed opposite each other at both ends of the cleaning chamber; a set of drive shafts, installed on the drive end of the second set of drive devices; a set of active bevel gears, installed at the bottom of the first set of drive shafts; a set of high-temperature steam pipes, installed opposite each other on the inner wall of the cleaning chamber; a set of rotating parts, movably installed on the inner wall of the cleaning chamber, with their rear ends connected to the corresponding high-temperature steam pipes; a set of driven bevel gears, installed on the set of rotating parts, and meshing with the corresponding active bevel gears; and several rotating cleaning pipes, evenly installed on the set of rotating parts. The several rotating cleaning pipes rotate relative to each other to perform high-temperature steam cleaning on the zeolite rotor, removing dust and impurities from inside the honeycomb channels of the zeolite rotor.

[0014] This invention provides a VOC treatment device based on zeolite molecular sieve, which has the following beneficial effects: by using a set of zeolite rotors and a pull-out assembly alternately inserted into the outer shell, a locking assembly locks and seals the zeolite rotors inside the outer shell and the outer shell, a desorption assembly can desorb the organic matter adsorbed by the zeolite rotors inside the outer shell at high temperature, and a cleaning assembly can perform high-temperature steam cleaning on the zeolite rotors in the cleaning chamber to remove dust and impurities inside the honeycomb channels of the zeolite rotors, and achieve the purpose of cleaning without stopping the machine, effectively improving production efficiency. Attached Figure Description

[0015] Figure 1 is a schematic diagram of a VOC treatment device based on zeolite molecular sieve according to the present invention; Figure 2 is a schematic diagram of the outer shell according to the present invention; Figure 3 is a schematic diagram of the desorption assembly according to the present invention; Figure 4 is a schematic diagram of the heat exchanger installation according to the present invention; Figure 5 is a schematic diagram of the desorption box installation according to the present invention; Figure 6 is a schematic diagram of the sealing fixed wheel according to the present invention; Figure 7 is a schematic diagram of the driving assembly and locking assembly according to the present invention; Figure 8 is a schematic diagram of the fixed slide rail according to the present invention; Figure 9 is a schematic diagram of the pull-out assembly according to the present invention; Figure 10 is a schematic diagram of the cleaning assembly according to the present invention; Figure 11 is a schematic diagram of the rotating component transmission according to the present invention; In the figures: 1, outer shell; 11, front outer shell; 111, air inlet; 112, pre-filter; 12, middle outer shell; 13, rear outer shell; 131, exhaust port; 14 15. Base; 2. Zeolite rotor; 3. Drive assembly; 31. Starter motor; 32. Pinion; 33. Hollow frustum; 34. Gear ring; 4. Desorption assembly; 41. Desorption box; 42. Cold air pipe; 43. Heat exchanger; 44. High-temperature desorption pipe; 45. Linear actuator unit one; 5. Locking assembly; 51. Drive device one; 52. Rotating shaft; 53. External thread; 54. Sliding nut; 55. Locking ring; 6. Cleaning chamber; 7. Pull-out assembly; 71. Fixed slide rail; 72. Linear actuator unit two; 73. Sealing fixed wheel; 8. Cleaning assembly; 81. Drive device two; 82. Drive shaft; 83. Drive bevel gear; 84. High-temperature steam pipe; 85. Rotating component; 86. Driven bevel gear; 87. Rotary cleaning pipe. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings, as shown in Figures 1-11: This application provides a VOC treatment device based on zeolite molecular sieves, comprising a housing 1; a set of zeolite rotors 2, alternately inserted into the housing 1; a drive assembly 3, installed on the upper end of the housing 1, used to drive the zeolite rotors 2 inside the housing 1 to rotate; a desorption assembly 4, installed on both sides of the housing 1, used to desorb organic matter adsorbed by the set of zeolite rotors 2; a locking assembly 5, fitted onto the housing 1, used to lock and seal the zeolite rotors 2 inside the housing 1 and the housing 1; a cleaning chamber 6, connected to the front end of the housing 1; a pull-out assembly 7, installed at the front end of the cleaning chamber 6, used to drive the set of zeolite rotors 2 to move alternately; and a cleaning assembly 8, installed inside the cleaning chamber 6, used to perform high-temperature steam cleaning on the set of zeolite rotors 2 respectively.

[0017] In this embodiment, a differential pressure gauge is installed on the outer shell 1 to detect the pressure difference between the inlet and outlet. When the pressure difference reaches a predetermined value, the pull-out assembly 7 drives a set of zeolite rotors 2 to run alternately. The locking assembly 5 locks and seals the zeolite rotors 2 inside the outer shell 1 and the outer shell 1. The desorption assembly 4 can perform normal high-temperature desorption of the organic matter adsorbed by the zeolite rotors 5 inside the outer shell 1. The cleaning assembly 8 can perform high-temperature steam cleaning of the zeolite rotors 2 in the cleaning chamber 6 to remove dust and impurities inside the honeycomb channels of the zeolite rotors 2, and achieve the purpose of cleaning without stopping the machine, effectively improving production efficiency.

[0018] In some embodiments, the housing 1 includes a front housing 11, a middle housing 12 and a rear housing 13, and the bottom of each housing is fixed to the base 15 by a corner bracket 14. The front housing 11 has an air inlet 111 at the front end and a pre-filter 112 installed inside. The rear housing 13 has an exhaust port 131 at the rear end.

[0019] As shown in Figure 2, the air inlet 111 is connected to the external VOC exhaust gas pipeline. The pre-filter 112 uses an activated carbon filter layer to filter out particulate matter and impurities in the exhaust gas, preventing dust, oily droplets and other impurities in the VOC exhaust gas from clogging the fine pores of the zeolite rotor 2 and affecting the adsorption performance of the zeolite rotor 2, thereby protecting the zeolite rotor 2 and extending its service life. The clean gas filtered by the zeolite rotor 2 is finally discharged through the exhaust port 131.

[0020] In some embodiments, the drive assembly 3 includes a set of starter motors 31, which are fixed to the upper sides of the housing 1; a set of pinions 32, which are mounted on the drive ends of the set of starter motors 31 and are retractable; a set of hollow frustums 33, on which a set of zeolite wheels 2 are movably mounted; and a set of gear rings 34, which are fitted on the outer surface of the set of zeolite wheels 2 and mesh with the corresponding pinions 32.

[0021] As shown in Figure 7, the initial position of the pinion 32 is located inside the drive end of the starter motor 31, which facilitates the pull-out assembly 7 to pull the zeolite wheel 2. The pinion 32 is used to mesh with the gear ring 34 on the zeolite wheel 2. During operation, the rotational force generated by the starter motor 31 is transmitted to the gear ring 34 through the pinion 32, which in turn drives the zeolite wheel 2 on the hollow truncated cone 33 to rotate. The pinion 32 will rotate before meshing to ensure precise meshing with the gear ring 34 and avoid impact and damage.

[0022] In some embodiments, the desorption assembly 4 includes a set of desorption boxes 41, which are relatively sealed and installed on both sides of the upper end of the zeolite rotor 2 inside the housing 1; a cold air pipe 42, which is connected to the front end of the set of desorption boxes 41 and is used to cool the desorbed zeolite rotor 2; a heat exchanger 43, which is connected to the rear end of the cold air pipe 42; a high-temperature desorption pipe 44, which is connected to the rear end of the set of desorption boxes 41 and is used to perform high-temperature desorption of organic matter adsorbed by the zeolite rotor 2; and a set of linear actuators 45, which are relatively installed on both sides of the housing 1 and are used to drive the set of desorption boxes 41 to move relative to each other.

[0023] As shown in Figures 3-5, the linear actuator 45 uses a cylinder. During operation, a set of linear actuators 45 first drives a set of desorption boxes 41 to fit against the upper sides of the zeolite rotor 2 inside the outer shell 1. A sealing ring is installed at the front end of the desorption box 41 to provide a seal. The adsorption zone on the zeolite rotor 2 is used to filter organic matter in VOC waste gas. When the zeolite rotor 2 rotates with the adsorbed organic matter to the desorption zone, the high-temperature air in the high-temperature desorption pipe 44 causes the zeolite to heat up and the bonding force to weaken. The organic matter is desorbed and sent to the subsequent oxidation furnace for incineration. After desorption, the high-temperature zeolite 2 is transferred to the cooling zone. The cold air pipe 42 uses room temperature air to cool the zeolite rotor 2 to room temperature, restoring its adsorption activity and ensuring stable adsorption efficiency in the next cycle.

[0024] In some embodiments, the cold air pipe 42 and the high temperature desorption pipe 44 are respectively made of corrugated pipes, which are easy to pull along with the desorption box 41.

[0025] In some embodiments, the locking assembly 5 drive device 51 is installed at the bottom of the housing 1; the rotating shaft 52 is a set connected by a coupling, and its right end is installed on the drive end of the drive device 51; the external threads 53 are two sets, which are opposite to each other on the outer surface of the set of rotating shafts 52; the sliding nuts 54 are two sets, which are fitted on the two sets of external threads 53; the locking rings 55 are two sets, which are movably sealed and fitted on the set of housings 1, and their bottoms are respectively connected to the corresponding sliding nuts 54.

[0026] As shown in Figure 7, the drive device 51 is an electric motor that can drive a set of rotating shafts 52 to rotate synchronously. When the drive device 51 rotates forward, it drives the two sets of sliding nuts 54 on the set of rotating shafts 52 to move relative to each other, so that the two sets of locking rings 55 lock and seal the zeolite wheel 2 and the sealing fixed wheel 73 in the outer shell 1 respectively. Conversely, when the drive device 51 rotates backward, it causes the two sets of locking rings 55 to separate the zeolite wheel 2 and the sealing fixed wheel 73 in the outer shell 1 respectively, so that the pull-out assembly 7 can pull the zeolite wheel 2.

[0027] In some embodiments, the pull-out assembly 7 includes a set of fixed slide rails 71, which are installed at the bottom of the housing 1, and a set of zeolite wheels 2 are slidably installed on the corresponding fixed slide rails 71; a set of linear actuators 72, which are installed at the front end of the cleaning chamber 6 and are used to drive the set of zeolite wheels 2 to move alternately; and a set of sealing fixed wheels 73, which are connected to the rear end of the set of zeolite wheels 2 and are used to seal the housing 1.

[0028] As shown in Figure 9, the linear actuator 2 72 adopts a multi-stage telescopic electric cylinder, which, together with a set of fixed slide rails 71 at the bottom, can pull a set of zeolite rotors 2 and a sealing fixed wheel 73 to move alternately, which facilitates high-temperature steam cleaning of the zeolite rotors 2.

[0029] In some embodiments, annular sealing grooves are opened at both ends of a set of zeolite rotors 2 and a set of sealing fixed wheels 73, so that the locking ring 55 can lock and seal the zeolite rotors 2 and the sealing fixed wheels 73.

[0030] In some embodiments, the cleaning assembly 8 includes a set of drive devices 81, which are installed opposite to each other at both ends of the cleaning chamber 6; a set of drive shafts 82, which are installed on the drive ends of the set of drive devices 81; a set of drive bevel gears 83, which are installed at the bottom of the set of drive shafts 82; a set of high-temperature steam pipes 84, which are installed opposite to each other on the inner wall of the cleaning chamber 6; a set of rotating parts 85, which are movably installed on the inner wall of the cleaning chamber 6 and whose rear ends are connected to the corresponding high-temperature steam pipes 84; a set of driven bevel gears 86, which are installed on the set of rotating parts 85 and respectively mesh with the corresponding drive bevel gears 83; and several rotating cleaning pipes 87, which are evenly installed on the set of rotating parts 85.

[0031] As shown in Figures 10 and 11, the high-temperature steam pipe 84 is connected to an external high-temperature steam cleaner. Utilizing the characteristic of water's boiling point increase in a closed pressurized environment, saturated steam is generated. Through a dual mechanism of thermal degradation and physical scouring, efficient cleaning is achieved. The second drive device 81 adopts a synchronous motor. During high-temperature steam cleaning, a set of drive devices 81 drives a set of rotating parts 85 to rotate through a set of drive shafts 82, causing several rotating cleaning pipes 87 to rotate relative to each other. This performs high-temperature steam cleaning on the zeolite rotor 2, removing dust and impurities from the honeycomb channels of the zeolite rotor 2, and achieving the purpose of cleaning without stopping the machine, effectively improving production efficiency.

[0032] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A VOC treatment device based on zeolite molecular sieve, characterized in that: The assembly includes a shell (1); a set of zeolite rotors (2), which are alternately inserted into the shell (1); a drive assembly (3), which is installed on the upper end of the shell (1) and is used to drive the zeolite rotors (2) inside the shell (1) to rotate; a desorption assembly (4), which is installed on both sides of the shell (1) and is used to desorb the organic matter adsorbed by the set of zeolite rotors (2); a locking assembly (5), which is fitted on the shell (1) and is used to lock and seal the zeolite rotors (2) inside the shell (1) and the shell (1); a cleaning chamber (6), which is connected to the front end of the shell (1); a pull assembly (7), which is installed at the front end of the cleaning chamber (6) and is used to drive the set of zeolite rotors (2) to move alternately; and a cleaning assembly (8), which is installed in the cleaning chamber (6) and is used to perform high-temperature steam cleaning on the set of zeolite rotors (2) respectively.

2. The VOC treatment device based on zeolite molecular sieve according to claim 1, characterized in that, The outer shell (1) includes a front outer shell (11), a middle outer shell (12) and a rear outer shell (13), and the bottom of each is fixed to the base (15) by a corner bracket (14). The front outer shell (11) has an air inlet (111) at the front end and a pre-filter (112) is installed inside. The rear outer shell (13) has an exhaust port (131) at the rear end.

3. The VOC treatment device based on zeolite molecular sieve according to claim 1, characterized in that, The drive assembly (3) includes a set of starter motors (31) which are fixed on both sides of the upper end of the outer shell (1); a set of pinions (32) which are mounted on the drive end of the set of starter motors (31) and can be extended and retracted; a set of hollow truncated cones (33) which are movably mounted on the corresponding hollow truncated cones (33); and a set of gear rings (34) which are fitted on the outer surface of the set of zeolite wheels (2) and mesh with the corresponding pinions (32).

4. The VOC treatment device based on zeolite molecular sieve according to claim 1, characterized in that, The desorption assembly (4) includes a set of desorption boxes (41), which are relatively sealed and installed on both sides of the upper end of the zeolite rotor (2) inside the outer shell (1); a cold air pipe (42), which is connected to the front end of the set of desorption boxes (41) and is used to cool the desorbed zeolite rotor (2); a heat exchanger (43), which is connected to the rear end of the cold air pipe (42); a high temperature desorption pipe (44), which is connected to the rear end of the set of desorption boxes (41) and is used to desorb the organic matter adsorbed by the zeolite rotor (2) at high temperature; and a linear actuator (45), which is a set of desorption boxes (45), which are relatively installed on both sides of the outer shell (1) and are used to drive the set of desorption boxes (41) to move relative to each other.

5. A VOC treatment device based on zeolite molecular sieve according to claim 4, characterized in that, The cold air pipe (42) and the high temperature desorption pipe (44) are respectively made of corrugated pipe.

6. The VOC treatment device based on zeolite molecular sieve according to claim 1, characterized in that, The locking assembly (5) includes a drive device (51) installed at the bottom of the housing (1); a set of rotating shafts (52) connected by a coupling, with the right end installed on the drive end of the drive device (51); two sets of external threads (53) opposite each other on the outer surface of the set of rotating shafts (52); two sets of sliding nuts (54) fitted on the two sets of external threads (53); and two sets of locking rings (55) movably sealed on the set of housings (1), with the bottoms respectively connected to the corresponding sliding nuts (54).

7. The VOC treatment device based on zeolite molecular sieve according to claim 1, characterized in that, The pull-out assembly (7) includes a set of fixed slide rails (71) installed at the bottom of the outer shell (1), and a set of zeolite wheels (2) slidably installed on the corresponding fixed slide rails (71); a set of linear actuators (72) installed at the front end of the cleaning chamber (6) and used to drive the set of zeolite wheels (2) to move alternately; and a set of sealing fixed wheels (73) connected to the rear end of the set of zeolite wheels (2) and used to seal the outer shell (1).

8. A VOC treatment device based on zeolite molecular sieve according to claim 7, characterized in that, A set of zeolite rotors (2) and a set of sealing fixed rotors (73) each have annular sealing grooves at both ends.

9. A VOC treatment device based on zeolite molecular sieve according to claim 1, characterized in that, The cleaning assembly (8) includes a set of two drive devices (81) installed opposite each other at both ends of the cleaning chamber (6); a set of drive shafts (82) installed on the drive end of the set of two drive devices (81); a set of active bevel gears (83) installed at the bottom of the set of drive shafts (82); a set of high-temperature steam pipes (84) installed opposite each other on the inner wall of the cleaning chamber (6); a set of rotating parts (85) movably installed on the inner wall of the cleaning chamber (6) and connected at the rear end to the corresponding high-temperature steam pipes (84); a set of driven bevel gears (86) installed on the set of rotating parts (85) and meshing with the corresponding active bevel gears (83); and several rotating cleaning pipes (87) evenly installed on the set of rotating parts (85).

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